As if the Decepticons don't have enough firepower already, The Fallen arrives on the scene to really turn the tables in Megatron's favor. This evil robot was one of the 13 original Transformers on Cybertron. His face even serves as the symbol the Decepticons rally around.

The Fallen has been confined to a parallel dimension for countless years. He's quietly been directing the Decepticons from afar and waiting for the moment he can slip back into this universe again.

The Fallen transforms into a Cybertronian airship, rather than an Earth-based vehicle. He's very old school like that.

Though one of the Decepticons in the original Transformers was credited as Devastator, fans haven't seen the real one until now. That robot was actually Brawl. The real Devastator is impossible to miss, as he towers over even the other Transformers. Devastator is a massive machine that resembles a mechanical gorilla. Standing upright, he would measure at least 100 feet tall.

Devastator's body is actually comprised of seven smaller Decepticons known as the Constructicons. Mixmaster forms the head. Scavenger and Overlord form the torso. Hightower, Long Haul, Scrapper, and Rampage form the limbs. All seven of these bots transform into various construction vehicles when separated.

Soundwave is one of the more iconic Decepticons. In the original cartoon he was able to transform into a cassette deck. A Transformer with that ability appeared in the first film, but that was merely Frenzy. He's a far cry from the real thing.

Soundwave serves as Megatron's chief intelligence officer. In this movie, rather than transforming into a boom box or anything of the sort, Soundwave morphs into what is believed to be either a jet or a satellite. He may even be both at once. For now, Soundwave remains one of the more elusive Decepticons.